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   1  <?php  // $Id: enrol.php,v 1.28.2.3 2008/01/07 20:56:20 poltawski Exp $
   2         // Implements all the main code for the PayPal plugin
   3  
   4  require_once("$CFG->dirroot/enrol/enrol.class.php");
   5  
   6  
   7  class enrolment_plugin_paypal {
   8  
   9  
  10  /// Override the base print_entry() function
  11  function print_entry($course) {
  12      global $CFG, $USER;
  13  
  14  
  15      $strloginto = get_string("loginto", "", $course->shortname);
  16      $strcourses = get_string("courses");
  17  
  18      $teacher = get_teacher($course->id);
  19  
  20      if ( (float) $course->cost < 0 ) {
  21          $cost = (float) $CFG->enrol_cost;
  22      } else {
  23          $cost = (float) $course->cost;
  24      }
  25  
  26      if (abs($cost) < 0.01) { // no cost, default to base class entry to course
  27  
  28          $manual = enrolment_factory::factory('manual');
  29          $manual->print_entry($course);
  30  
  31      } else {
  32          $navlinks = array();
  33          $navlinks[] = array('name' => $strcourses, 'link' => "$CFG->wwwroot/course", 'type' => 'misc');
  34          $navlinks[] = array('name' => $strloginto, 'link' => null, 'type' => 'misc');
  35          $navigation = build_navigation($navlinks);
  36  
  37          print_header($strloginto, $course->fullname, $navigation);
  38          print_course($course, "80%");
  39  
  40          if ($course->password) {  // Presenting two options
  41              print_heading(get_string('costorkey', 'enrol_paypal'), 'center');
  42          }
  43  
  44          print_simple_box_start("center");
  45  
  46          if ($USER->username == 'guest') { // force login only for guest user, not real users with guest role
  47              if (empty($CFG->loginhttps)) {
  48                  $wwwroot = $CFG->wwwroot;
  49              } else {
  50                  // This actually is not so secure ;-), 'cause we're
  51                  // in unencrypted connection...
  52                  $wwwroot = str_replace("http://", "https://", $CFG->wwwroot);
  53              }
  54              echo '<div align="center"><p>'.get_string('paymentrequired').'</p>';
  55              echo '<p><b>'.get_string('cost').": $CFG->enrol_currency $cost".'</b></p>';
  56              echo '<p><a href="'.$wwwroot.'/login/">'.get_string('loginsite').'</a></p>';
  57              echo '</div>';
  58          } else {
  59              //Sanitise some fields before building the PayPal form
  60              $coursefullname  = $course->fullname;
  61              $courseshortname = $course->shortname;
  62              $userfullname    = fullname($USER);
  63              $userfirstname   = $USER->firstname;
  64              $userlastname    = $USER->lastname;
  65              $useraddress     = $USER->address;
  66              $usercity        = $USER->city;
  67  
  68              include($CFG->dirroot.'/enrol/paypal/enrol.html');
  69          }
  70  
  71          print_simple_box_end();
  72  
  73          if ($course->password) {  // Second option
  74              $password = '';
  75              include($CFG->dirroot.'/enrol/manual/enrol.html');
  76          }
  77  
  78          print_footer();
  79  
  80      }
  81  } // end of function print_entry()
  82  
  83  
  84  
  85  
  86  /// Override the get_access_icons() function
  87  function get_access_icons($course) {
  88      global $CFG;
  89  
  90      $str = '';
  91  
  92      if ( (float) $course->cost < 0) {
  93          $cost = (float) $CFG->enrol_cost;
  94      } else {
  95          $cost = (float) $course->cost;
  96      }
  97  
  98      if (abs($cost) < 0.01) {
  99          $manual = enrolment_factory::factory('manual');
 100          $str = $manual->get_access_icons($course);
 101  
 102      } else {
 103  
 104          $strrequirespayment = get_string("requirespayment");
 105          $strcost = get_string("cost");
 106  
 107          if (empty($CFG->enrol_currency)) {
 108              set_config('enrol_currency', 'USD');
 109          }
 110  
 111          switch ($CFG->enrol_currency) {
 112             case 'EUR': $currency = '&euro;'; break;
 113             case 'CAD': $currency = '$'; break;
 114             case 'GBP': $currency = '&pound;'; break;
 115             case 'JPY': $currency = '&yen;'; break;
 116             case 'AUD': $currency = '$'; break;
 117             default:    $currency = '$'; break;
 118          }
 119  
 120          $str .= '<div class="cost" title="'.$strrequirespayment.'">'.$strcost.': ';
 121          $str .= $currency.format_float($cost,2).'</div>';
 122  
 123      }
 124  
 125      return $str;
 126  }
 127  
 128  /// Override the base class config_form() function
 129  function config_form($frm) {
 130      global $CFG;
 131  
 132      $paypalcurrencies = array(  'USD' => 'US Dollars',
 133                                  'EUR' => 'Euros',
 134                                  'JPY' => 'Japanese Yen',
 135                                  'GBP' => 'British Pounds',
 136                                  'CAD' => 'Canadian Dollars',
 137                                  'AUD' => 'Australian Dollars'
 138                               );
 139  
 140      $vars = array('enrol_cost', 'enrol_currency', 'enrol_paypalbusiness',
 141                    'enrol_mailstudents', 'enrol_mailteachers', 'enrol_mailadmins');
 142      foreach ($vars as $var) {
 143          if (!isset($frm->$var)) {
 144              $frm->$var = '';
 145          }
 146      }
 147  
 148      include("$CFG->dirroot/enrol/paypal/config.html");
 149  }
 150  
 151  function process_config($config) {
 152  
 153      if (!isset($config->enrol_cost)) {
 154          $config->enrol_cost = 0;
 155      }
 156      set_config('enrol_cost', $config->enrol_cost);
 157  
 158      if (!isset($config->enrol_currency)) {
 159          $config->enrol_currency = 'USD';
 160      }
 161      set_config('enrol_currency', $config->enrol_currency);
 162  
 163      if (!isset($config->enrol_paypalbusiness)) {
 164          $config->enrol_paypalbusiness = '';
 165      }
 166      $config->enrol_paypalbusiness = trim($config->enrol_paypalbusiness); // remove trailing spaces etc.
 167      set_config('enrol_paypalbusiness', $config->enrol_paypalbusiness);
 168  
 169      if (!isset($config->enrol_mailstudents)) {
 170          $config->enrol_mailstudents = '';
 171      }
 172      set_config('enrol_mailstudents', $config->enrol_mailstudents);
 173  
 174      if (!isset($config->enrol_mailteachers)) {
 175          $config->enrol_mailteachers = '';
 176      }
 177      set_config('enrol_mailteachers', $config->enrol_mailteachers);
 178  
 179      if (!isset($config->enrol_mailadmins)) {
 180          $config->enrol_mailadmins = '';
 181      }
 182      set_config('enrol_mailadmins', $config->enrol_mailadmins);
 183  
 184      return true;
 185  
 186  }
 187  
 188  /**
 189  * This function enables internal enrolment when PayPal is primary and course key is set at the same time.
 190  *
 191  * @param    form    the form data submitted, as an object
 192  * @param    course  the current course, as an object
 193  */
 194  function check_entry($form, $course) {
 195      $manual = enrolment_factory::factory('manual');
 196      $manual->check_entry($form, $course);
 197      if (isset($manual->errormsg)) {
 198          $this->errormsg = $manual->errormsg;
 199      }
 200  }
 201  
 202  /**
 203   * Provides method to print the enrolment key form code. This method is called
 204   * from /enrol/manual/enrol.html if it's included
 205   * @param  object a valid course object
 206   */
 207  function print_enrolmentkeyfrom($course) {
 208      $manual = enrolment_factory::factory('manual');
 209      $manual->print_enrolmentkeyfrom($course);
 210  }
 211  
 212  
 213  } // end of class definition
 214  
 215  ?>